Dual, 2MSPS, 12-Bit, 3+3 or 2+2 Channel, Simultaneous Sampling Analog-To-Digital SAR Converter - ADS7863

ADS7863 (NRND)

Dual, 2MSPS, 12-Bit, 3+3 or 2+2 Channel, Simultaneous Sampling Analog-To-Digital SAR Converter

Not Recommended for New Designs (NRND)

Replaced By ADS7863A – The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.  

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.

Description

The ADS7863 is a dual, 12-bit, 2MSPS, analog-to-digital converter (ADC) with four fully differential or six pseudo-differential input channels grouped into two pairs for high-speed, simultaneous signal acquisition. Inputs to the sample-and-hold (S/H) amplifiers are fully differential and are maintained differential to the input of the ADC. This architecture provides excellent common-mode rejection of 72dB at 100kHz, which is a critical performance characteristic in noisy environments.

The ADS7863 is pin-compatible with the ADS7861, but offers additional features such as a programmable reference output, flexible supply voltage (2.7V to 5.5V for AVDD and BVDD), a pseudo-differential input multiplexer with three channels per ADC, and several power-down features.

The ADS7863 is offered in an SSOP-24 and a 4×4mm QFN-24 package. It is specified over the extended operating temperature range of –40°C to +125°C.

Features

  • Four Fully- or Six Pseudo-Differential Inputs
  • SNR: 71dB, THD: –81dB
  • Programmable and Buffered Internal 2.5V Reference
  • Flexible Power-Down Features
  • Variable Power-Supply Ranges: 2.7V to 5.5V
  • Low-Power Operation: 45mW at 5V
  • Operating Temperature Range:
    –40°C to +125°C
  • Pin-Compatible with ADS7861 and ADS8361 (SSOP package)
  • APPLICATIONS
    • Motor Control
    • Multi-Axis Positioning Systems
    • Three-Phase Power Control

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    Part # Name Product Family Comments
    TPS7A3001   Vin -3V to -36V, -200mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    The negative-voltage TPS7A3001 LDO, when paired with the positive voltage TPS7A4901 LDO, provides designers with a total solution for powering precision analog applications. These LDOs feature ultra-high PSRR performance with output noise as low as 16 �Vrms and are designed to power noise-sensitive applications. Please look at ti.com/pmp5863.
    See Literature slvt170  See Literature SLVT170, Power management for Precision Analog  
    TPS7A4901   Vin 3V to 36V, 150mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    The negative-voltage TPS7A3001 LDO, when paired with the positive voltage TPS7A4901 LDO, provides designers with a total solution for powering precision analog applications. These LDOs feature ultra-high PSRR performance with output noise as low as 16 �Vrms and are designed to power noise-sensitive applications. Please look at ti.com/pmp5863.
    See Literature slvt170  See Literature SLVT170, Power management for Precision Analog  
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